/*
 * Copyright (c) 2017. AnStudio + Medical Plus Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.anstudio.app.lhasa.core.untils;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;

public enum SqlUtils {
    instance;

    private Map<String, SqlSessionFactory> factoryList = new HashMap();

    public SqlSessionFactory getSqlSessionFactory(String key) {
        SqlSessionFactory ret = null;
        if (factoryList.containsKey(key)) {
            return factoryList.get(key);
        } else {
            InputStream is = null;
            try {
                is = Resources.getResourceAsStream(key);
                ret = new SqlSessionFactoryBuilder().build(is);
                factoryList.put(key, ret);
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                return ret;
            }
        }
    }
}
